Why is it a physical change to freeze water? A. heat is released during the process. B. the new and original substances are different. C. a temperature change occurs. D. only a phase change occurs.

Answer 1

The correct answer is D. only a phase change occurs.

When water freezes, it changes from a liquid state to a solid state (ice), but its chemical composition (H2O) remains the same. This is why freezing is considered a physical change – it involves a change in state (phase change) without altering the molecular structure of the substance.